/*
Copyright 2003-2012 Dmitry Barashev, GanttProject Team

This file is part of GanttProject, an opensource project management tool.

GanttProject is free software: you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

GanttProject is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GanttProject.  If not, see <http://www.gnu.org/licenses/>.
*/
package net.sourceforge.ganttproject.chart.timeline;

import java.text.SimpleDateFormat;
import java.util.Date;

import net.sourceforge.ganttproject.language.GanttLanguage;
import net.sourceforge.ganttproject.language.GanttLanguage.Event;
import net.sourceforge.ganttproject.time.TimeUnitText;

public class MonthTextFormatter extends CachingTextFormatter implements TimeFormatter {
    private String myLongPattern;

    private String myMediumPattern;

    private String myShortPattern;

    public MonthTextFormatter(String longPattern, String mediumPattern, String shortPattern) {
        myLongPattern = longPattern;
        myMediumPattern = mediumPattern;
        myShortPattern = shortPattern;
        initFormats();
    }

    @Override
    protected TimeUnitText[] createTimeUnitText(Date adjustedLeft) {
        TimeUnitText result;
        String longText = myLongFormat.format(adjustedLeft);
        String mediumText = myMediumFormat.format(adjustedLeft);
        String shortText = myShortFormat.format(adjustedLeft);
        result = new TimeUnitText(longText, mediumText, shortText);
        return new TimeUnitText[] {result};
    }

    private void initFormats() {
        myLongFormat = GanttLanguage.getInstance().createDateFormat(myLongPattern);
        myMediumFormat = GanttLanguage.getInstance().createDateFormat(myMediumPattern);
        myShortFormat = GanttLanguage.getInstance().createDateFormat(myShortPattern);
    }

    @Override
    public void languageChanged(Event event) {
        super.languageChanged(event);
        initFormats();
    }

    private SimpleDateFormat myLongFormat;

    private SimpleDateFormat myMediumFormat;

    private SimpleDateFormat myShortFormat;
}
